21
308–030
CONNECTING ROD and BEARING HOUSING
To reduce the risk of serious bodily injury, al-
ways follow the Pressure Relief Procedure
Warning on page 14 before checking or re-
pairing any part of the spray system.
WARNING
NOTE: Refer to Fig 19.
1. Remove the sprayer’s shroud and the lift han-
dle (2).
2. Remove pump as described on page 16.
3. Remove the two screws (51). Pull the bearing
housing and connecting rod assembly (A) off
the crankshaft (B).
4. Use a screwdriver to push the retaining spring
(65) up. Remove the pin (63) and the coupling
(64).
5. Replace the drive housing (8) if the crank (B)
is worn or damaged.
6. Clean and inspect the bearing housing (66)
and connecting rod (68), including the needle
bearing (C). Replace both parts if either is
worn or damaged.
7. Clean the mating surfaces of the bearing and
drive housings.
8. Evenly lubricate the inside of the bronze bear-
ing (D), and fill the cavity of the of the con-
necting rod (E) with SAE non-detergent motor
oil. Liberally pack the needle bearing (C) with
industrial, heavy-duty, extreme-pressure,
lithium-soap grease.
To extend the service life of the connecting
rod bearing, lubricate it properly. After every
100 hours of operation, or whenever servic-
ing the pump (whichever comes first), fill the
cavity in the connecting rod (68) with SAE
non–detergent motor oil.
CAUTION
9. Assemble the connecting rod (68) and bearing
housing (66). Assemble the coupling (64) to
the connecting rod and install the pin (63).
Push the spring (65) over both ends of the
pin.
10. Align the connecting rod (68) with the crank
(B) and push the bearing housing onto the
drive housing.
11. Assemble the remaining parts.
66
Fig 19
8
50
51
2
63
64
65
LUBRICATE:
See CAUTION
68
E
C
D
B
A
Summary of Contents for PRO 301
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